- 05 3月, 2008 3 次提交
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由 Dan Williams 提交于
include/linux/dmaengine.h:364:2: warning: returning void-valued expression Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Dan Williams 提交于
"Cleaning" descriptors involves calling pending callbacks and clients assume that their callback will only ever happen in softirq context. Delay cleanup to the tasklet. Signed-off-by: NDan Williams <dan.j.williams@intel.com> Acked-by: NZhang Wei <wei.zhang@freescale.com>
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由 Zhang Wei 提交于
The driver implements DMA engine API for Freescale MPC85xx DMA controller, which could be used by devices in the silicon. The driver supports the Basic mode of Freescale MPC85xx DMA controller. The MPC85xx processors supported include MPC8540/60, MPC8555, MPC8548, MPC8641 and so on. The MPC83xx(MPC8349, MPC8360) are also supported. [kamalesh@linux.vnet.ibm.com: build fix] [dan.j.williams@intel.com: merge mm fixes, rebase on async_tx-2.6.25] Signed-off-by: NZhang Wei <wei.zhang@freescale.com> Signed-off-by: NEbony Zhu <ebony.zhu@freescale.com> Acked-by: NKumar Gala <galak@gate.crashing.org> Cc: Shannon Nelson <shannon.nelson@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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- 04 3月, 2008 28 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm由 Linus Torvalds 提交于
* 'slab-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm: slub: fix possible NULL pointer dereference slub: Add kmalloc_large_node() to support kmalloc_node fallback slub: look up object from the freelist once slub: Fix up comments slub: Rearrange #ifdef CONFIG_SLUB_DEBUG in calculate_sizes() slub: Remove BUG_ON() from ksize and omit checks for !SLUB_DEBUG slub: Use the objsize from the kmem_cache_cpu structure slub: Remove useless checks in alloc_debug_processing slub: Remove objsize check in kmem_cache_flags() slub: rename slab_objects to show_slab_objects Revert "unique end pointer" patch slab: avoid double initialization & do initialization in 1 place
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由 Oleg Nesterov 提交于
1. exit_notify() always calls kill_orphaned_pgrp(). This is wrong, we should do this only when the whole process exits. 2. exit_notify() uses "current" as "ignored_task", obviously wrong. Use ->group_leader instead. Test case: void hup(int sig) { printf("HUP received\n"); } void *tfunc(void *arg) { sleep(2); printf("sub-thread exited\n"); return NULL; } int main(int argc, char *argv[]) { if (!fork()) { signal(SIGHUP, hup); kill(getpid(), SIGSTOP); exit(0); } pthread_t thr; pthread_create(&thr, NULL, tfunc, NULL); sleep(1); printf("main thread exited\n"); syscall(__NR_exit, 0); return 0; } output: main thread exited HUP received Hangup With this patch the output is: main thread exited sub-thread exited HUP received Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Oleg Nesterov 提交于
p->exit_state != 0 doesn't mean this process is dead, it may have sub-threads. Change the code to use "p->exit_state && thread_group_empty(p)" instead. Without this patch, ^Z doesn't deliver SIGTSTP to the foreground process if the main thread has exited. However, the new check is not perfect either. There is a window when exit_notify() drops tasklist and before release_task(). Suppose that the last (non-leader) thread exits. This means that entire group exits, but thread_group_empty() is not true yet. As Eric pointed out, is_global_init() is wrong as well, but I did not dare to do other changes. Just for the record, has_stopped_jobs() is absolutely wrong too. But we can't fix it now, we should first fix SIGNAL_STOP_STOPPED issues. Even with this patch ^Z doesn't play well with the dead main thread. The task is stopped correctly but do_wait(WSTOPPED) won't see it. This is another unrelated issue, will be (hopefully) fixed separately. Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Oleg Nesterov 提交于
Factor out the common code in reparent_thread() and exit_notify(). No functional changes. Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Samuel Thibault 提交于
Oddly enough, unsigned int c = '\300'; puts a "negative" value in c, not 0300... This fixes the default unicode compose table by using integers instead of character constants. Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Cyrill Gorcunov 提交于
This patch fix possible NULL pointer dereference if kzalloc failed. To be able to return proper error code the function return type is changed to ssize_t (according to callees and sysfs definitions). Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
Slub is missing some NUMA support for large kmallocs. Provide that. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Pekka J Enberg 提交于
We only need to look up object from c->page->freelist once in __slab_alloc(). Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
Provide comments and fix up various spelling / style issues. Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
Group SLUB_DEBUG code together to reduce the number of #ifdefs. Move some debug checks under the #ifdef. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
The BUG_ONs are useless since the pointer derefs will lead to NULL deref errors anyways. Some of the checks are not necessary if no debugging is possible. Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
No need to access the kmem_cache structure. We have the same value in kmem_cache_cpu. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
Alloc debug processing is never called with a NULL object pointer. No reason to check for NULL. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
There is no page->offset anymore and also no associated limit on the number of objects. The page->offset field was removed for 2.6.24. So the check in kmem_cache_flags() is now also obsolete (should have been dropped earlier, somehow a hunk vanished). Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
The sysfs callback is better named show_slab_objects since it is always called from the xxx_show callbacks. We need the name for other purposes later. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Christoph Lameter 提交于
This only made sense for the alternate fastpath which was reverted last week. Mathieu is working on a new version that addresses the fastpath issues but that new code first needs to go through mm and it is not clear if we need the unique end pointers with his new scheme. Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NChristoph Lameter <clameter@sgi.com>
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由 Linus Torvalds 提交于
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Fix freeing of page tables for ARM in free_pgd_slow
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由 Randy Dunlap 提交于
Fix docbook problems in fusion source files. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix docbook problems in kernel-api.tmpl. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix docbook problems in USB source files. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix docbook problem in SCSI source files. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix docbook problems in rapidio source files. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix docbook problems in filesystems.tmpl. These cause the generated docbook to be incorrect. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: x86: revert "x86: fix pmd_bad and pud_bad to support huge pages" x86: revert "x86: CPA: avoid split of alias mappings"
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc由 Linus Torvalds 提交于
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (24 commits) [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately [POWERPC] Move allocation of cell IOMMU pad page [POWERPC] Remove unused pte_offset variable [POWERPC] Use it_offset not pte_offset in cell IOMMU code [POWERPC] Clearup cell IOMMU fixed mapping terminology [POWERPC] enable hardware watchpoints on cell blades [POWERPC] move celleb DABRX definitions [POWERPC] OProfile: enable callgraph support for Cell [POWERPC] spufs: fix use time accounting on SPE-overcommit [POWERPC] spufs: serialize SLB invalidation against SLB loading [POWERPC] spufs: invalidate SLB translation before adding a new entry [POWERPC] spufs: synchronize IRQ when disabling [POWERPC] spufs: fix order of sputrace thread IDs [POWERPC] Xilinx: hwicap cleanup [POWERPC] 4xx: Use correct board info structure in cuboot wrappers [POWERPC] spufs: fix invalid scheduling of forgotten contexts [POWERPC] 44x: add missing define TARGET_4xx and TARGET_440GX to cuboot-taishan ...
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由 Linus Torvalds 提交于
The new code that removed the limitation on the execve string size (which was historically 32 pages) replaced it with a much softer limit based on RLIMIT_STACK which is usually much larger than the traditional limit. See commit b6a2fea3 ("mm: variable length argument support") for details. However, if you have a small stack limit (perhaps because you need lots of stacks in a threaded environment), the new heuristic of allowing up to 1/4th of RLIMIT_STACK to be used for argument and environment strings could actually be smaller than the old limit. So just say that it's ok to have up to ARG_MAX strings regardless of the value of RLIMIT_STACK, and check the rlimit only when going over that traditional limit. (Of course, if you actually have a *really* small stack limit, the whole stack itself will be limited before you hit ARG_MAX, but that has always been true and is clearly the right behaviour anyway). Acked-by: NCarlos O'Donell <carlos@codesourcery.com> Cc: Michael Kerrisk <michael.kerrisk@googlemail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Ollie Wild <aaw@google.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Linus Torvalds 提交于
This reverts commit cded932b. Arjan bisected down a boot-time hang to this, saying: ".. it prevents the kernel to finish booting on my (Penryn based) laptop. The boot stops right after freeing the init memory." and while it's not clear exactly what triggers it, at this stage we're better off just reverting it while Ingo tries to figure out what went wrong. Requested-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Hans Rosenfeld <hans.rosenfeld@amd.com> Cc: Nish Aravamudan <nish.aravamudan@gmail.com> Acked-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 03 3月, 2008 9 次提交
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由 Ingo Molnar 提交于
revert commit cded932b, "x86: fix pmd_bad and pud_bad to support huge pages", it causes a bootup hang, as reported and bisected by Arjan van de Ven. Bisected-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Rafael J. Wysocki 提交于
Revert: commit 8be8f54b Author: Thomas Gleixner <tglx@linutronix.de> Date: Sat Feb 23 20:43:21 2008 +0100 x86: CPA: avoid split of alias mappings because it clearly mishandles the case when __change_page_attr(), called from __change_page_attr_set_clr(), changes cpa->processed to 1 and cpa_process_alias(cpa) is executed right after that. This crashes my x86-64 test box early in the boot process (ref. http://bugzilla.kernel.org/show_bug.cgi?id=10140#c4). Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Acked-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Paul Mackerras 提交于
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由 Michael Ellerman 提交于
The only tricky part is we need to adjust the PTE insertion loop to cater for holes in the page table. The PTEs for each segment start on a 4K boundary, so with 16M pages we have 16 PTEs per segment and then a gap to the next 4K page boundary. It might be possible to allocate the PTEs for each segment separately, saving the memory currently filling the gaps. However we'd need to check that's OK with the hardware, and that it actually saves memory. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Michael Ellerman 提交于
Make some preliminary changes to cell_iommu_alloc_ptab() to allow it to take the page size as a parameter rather than assuming IOMMU_PAGE_SIZE. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Michael Ellerman 提交于
We use n_pte_pages to calculate the stride through the page tables, but we also use it to set the NPPT value in the segment table entry. That is defined as the number of 4K pages per segment, so we should calculate it as such regardless of the IOMMU page size. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Michael Ellerman 提交于
Currently the cell IOMMU code allocates the entire IOMMU page table in a contiguous chunk. This is nice and tidy, but for machines with larger amounts of RAM the page table allocation can fail due to it simply being too large. So split the segment table and page table setup routine, and arrange to have the dynamic and fixed page tables allocated separately. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Michael Ellerman 提交于
There's no need to allocate the pad page unless we're going to actually use it - so move the allocation to where we know we're going to use it. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Michael Ellerman 提交于
The cell IOMMU code no longer needs to save the pte_offset variable separately, it is incorporated into tbl->it_offset. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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